Something that is ~ is effective. (FORMAL)
The nasal spray was new on the market and highly ~.
= effective
ADJ
Something that is ~ is effective. (FORMAL)
The nasal spray was new on the market and highly ~.
= effective
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012